Calculate the wavelength (in nm) of a the red light emitted by a neon sign with a frequency of 4.74 × 1014 Hz.

Calculate the wavelength (in nm) of a the red light emitted by a neon sign with a frequency of 4.74 × 1014 Hz.



A) 633 nm
B) 158 nm
C) 142 nm
D) 704 nm
E) 466 nm


Answer: A


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